Update readme to say computers

This avoid saying "systems" too many times in a row.

diff --git a/readme.md b/readme.md
index c9b20022af5ee4df78007e05aad8f016cd509be8..564a0043f93619e37edf9af8fff8bbf028a7bacd 100644 (file)
--- a/readme.md
+++ b/readme.md
@@ -8,7 +8,7 @@ covered the period of July 1970 to July 1971 although some have
 claimed as early as 1969 but provide no sources.
 
 MIT-DM (along with other historically important systems like AI, MC, 
-and ML) were a group of PDP-10 systems running the Incompatible 
+and ML) were a group of PDP-10 computers running the Incompatible 
 Timesharing System (ITS.) This mudman.git repository is named after 
 the MUDMAN directory on DM, which contained documentation about 
 Muddle.